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MIC2545A-1BTS-TR
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Product Detailed Parameters
- Description：IC PWR SWITCH N-CHAN 1:1 14TSSOP
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Switch Type：USB Switch
- Number of Outputs：1
- Ratio - Input:Output：1:01
- Output Configuration：High Side
- Output Type：N-Channel
- Interface：On/Off
- Voltage - Load：2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd)：Not Required
- Current - Output (Max)：3A
- Rds On (Typ)：35mOhm
- Input Type：Non-Inverting
- Features：Slew Rate Controlled, Status Flag
- Fault Protection：Current Limiting (Adjustable), Over Temperature, Reverse Current
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：14-TSSOP
- Package / Case：14-TSSOP (0.173", 4.40mm Width)
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Overview
The MIC2545A-1BTS-TR is a single-channel, high-side power switch manufactured by Microchip Technology. It operates within a load voltage range of 2.7V to 5.5V and supports a maximum output current of 3A. The device features an N-channel output configuration with a typical on-resistance (RdsOn) of 35 milliohms. It includes resistor-programmable current limiting adjustable from 500mA to 3A, controlled soft-start, and reverse current blocking. The component is housed in a 14-TSSOP surface-mount package.
Feature Summary
- Resistor-programmable output current limit for flexible protection settings
- Integrated open-drain flag output for controller status indication
- Reverse current flow blocking capability
- Controlled slew rate during turn-on to minimize inrush current
Applications
- USB power distribution systems
- Advanced Configuration and Power Interface (ACPI) applications
- PCI bus power switching
- Notebook PC power management
Procurement Notes
Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status as some sources indicate non-compliance for this specific part number variant. Ensure the supplier provides the official Microchip datasheet for the MIC2545A series to validate electrical characteristics against design requirements.
Selection Notes
Select this component for applications requiring precise current limiting and low conduction loss in high-side switching roles. The programmable nature allows customization of fault thresholds via external resistors. Consider the 14-TSSOP package for space-constrained designs. Verify that the required current limit falls within the 500mA to 3A adjustable range supported by the internal circuitry.
Part Context
This part belongs to the MIC2545A/MIC2549A family of programmable current-limit high-side switches. While the MIC2549A includes an additional internal latch for robust fault control, the MIC2545A relies on the open-drain flag for status reporting. Both share similar electrical specifications but differ in fault handling mechanisms.
Replacement Considerations
Direct replacement options may include other Microchip high-side switches with similar pinouts and electrical ratings. Verify compatibility regarding current limit programming methods and package dimensions before substitution.
